floxif | 3442c825190e4c68309646c3e56822928d4018718f3813f32e7b5d0679277a13

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 02:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

ee69289754bfbde9b8a5743afd0c4d00N.dll
Size

145KB
MD5

ee69289754bfbde9b8a5743afd0c4d00
SHA1

e34d661db50470387bc50b1761f4e9d9f04e0010
SHA256

3442c825190e4c68309646c3e56822928d4018718f3813f32e7b5d0679277a13
SHA512

51d160a91c7967f22e0c3e57cd8ac2b490673bfe8f84a280750303f40ec5c32b586386566f999372521bcc49877ffbe5f2ae94c0d05c6cea07ecc3ea3a4f0ae6
SSDEEP

3072:dGFu9FnDPdr4smOcxPWz2lQBV+UdE+rECWp7hKTwzNh:EFunDPdr4vhaBV+UdvrEFp7hKUzn

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral2/files/0x00090000000233c7-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x00090000000233c7-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4568	rundll32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x00090000000233c7-2.dat	upx
behavioral2/memory/4568-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4568-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4568	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 4568	1404	rundll32.exe	85
PID 1404 wrote to memory of 4568	1404	rundll32.exe	85
PID 1404 wrote to memory of 4568	1404	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee69289754bfbde9b8a5743afd0c4d00N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee69289754bfbde9b8a5743afd0c4d00N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/4568-1-0x00000000750A3000-0x00000000750A4000-memory.dmp

Filesize
4KB

Download
memory/4568-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4568-6-0x00000000750A0000-0x00000000750B6000-memory.dmp

Filesize
88KB

Download
memory/4568-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download